CN220961644U - Protection device for vehicle fault simulation - Google Patents
Protection device for vehicle fault simulation Download PDFInfo
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- CN220961644U CN220961644U CN202322844964.1U CN202322844964U CN220961644U CN 220961644 U CN220961644 U CN 220961644U CN 202322844964 U CN202322844964 U CN 202322844964U CN 220961644 U CN220961644 U CN 220961644U
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- fault simulation
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- 238000004088 simulation Methods 0.000 title claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000007 visual effect Effects 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a protection device for vehicle fault simulation, which comprises an adjusting potentiometer body, a display device and a stub box, wherein the adjusting potentiometer body is provided with an adjusting device, the adjusting device is used for adjusting a resistance value in a circuit, a first end of the adjusting device is connected with the display device through a current lead, a second end of the adjusting device is connected with the stub box through the current lead, the display device is connected with the stub box through the current lead, and the display device is used for detecting voltage and current values in the circuit. According to the protection device for vehicle fault simulation, the adjusting potentiometer body is added between the short-circuit lines, the risk that the fuse is burnt by small current and large current is avoided, meanwhile, the variable resistor can adapt to short-circuit fault simulation of different vehicle types, the display device is a voltage and current double-digital display gauge outfit, a more visual reference basis for debugging resistance is provided for a technician, the working efficiency is greatly improved, the vehicle electricity safety can be guaranteed, and the maintenance cost of possible damage of the vehicle is saved.
Description
Technical Field
The utility model belongs to the technical field of testing, and particularly relates to a protection device for vehicle fault simulation.
Background
Modern automotive electronic control units (Electronic Control Unit, ECU) are equipped with an on-board diagnostic system (On Board Diagnostics, OBD). The OBD system can monitor the working state and performance of each system and component of the engine in real time, and timely find faults existing in the system. Under normal state, the signals of the sensors and the actuators can change within a certain range, when the ECU monitors that the signals exceed a specified numerical range, the OBD confirms that the signals are faulty, a fault lamp on the instrument panel of the cab is lightened, and a corresponding fault code is generated in the system for being called by repair staff.
In the new vehicle research and development, the transformation of the transformation vehicle are carried out on the vehicle, when the fault is simulated, the stub box is arranged between the ECU and the whole vehicle wire harness, whether the open circuit and the short circuit fault correspond to fault variables or not is tested one by one through pin point positions on the stub box, especially, the short circuit fault is related to detection, the point position pins are required to be directly short-circuited, and the abrupt large current can bring the risk of burning and melting to the whole vehicle circuit fuse. Fuse burning currents on the whole car are different in size such as 5A,10A and 15A, and a low-current fuse can be broken down easily. The electronic device of the vehicle can be directly damaged, potential safety hazard is brought to driving, and meanwhile, the difficulty for a technician to check the problem is increased .
Disclosure of utility model
The utility model aims to provide a protection device for vehicle fault simulation, which is used for solving the problem of potential safety hazards caused by the fact that a low-current fuse is easily fused in a conventional detection mode in the prior art.
To achieve the purpose, the utility model adopts the following technical scheme:
A protection device for vehicle fault simulation, which adjusts a potentiometer body, a display device, and a stub case, wherein,
The stub box is positioned between the ECU body and the whole vehicle wire harness,
The adjusting potentiometer comprises a potentiometer body, and is characterized in that an adjusting device is arranged on the potentiometer body and used for adjusting a resistance value in a circuit, a first end of the adjusting device is connected with the display device through a current lead, a second end of the adjusting device is connected with the stub box through a current lead, the display device is connected with the stub box through the current lead to form a current loop, and the display device is used for detecting voltage and current values in the circuit.
Further, a profiling insulating sleeve is arranged on the outer side of the adjusting potentiometer body and is at least used for conducting anti-leakage protection on a contactor.
Further, the adjusting device comprises two fixed terminals, a movable terminal and an adjusting piece, wherein the two fixed terminals are fixed on the adjusting potentiometer body at intervals, the movable terminal is movably arranged between the two fixed terminals, the driving end of the adjusting piece is connected with the movable terminal, and the movable terminal is driven to reciprocate between the two fixed terminals through adjusting the adjusting piece so as to adjust the resistance in the circuit.
Preferably, the profiling insulating sleeve is made of rubber.
Preferably, the adjusting member adopts an adjusting knob.
Compared with the prior art, the protection device for vehicle fault simulation has the beneficial effects that: according to the utility model, the adjusting potentiometer body is skillfully added between the short circuit lines, so that the risk that the fuse is burnt by small current and large current is successfully avoided, meanwhile, the variable resistor can adapt to short circuit fault simulation of different vehicle types, the display device is a voltage and current double-digital display gauge head, a more visual reference basis for debugging the resistor is provided for a technician, the working efficiency is greatly improved, the vehicle electricity safety is ensured, and the maintenance cost of the vehicle which is possibly damaged is saved; the profiling insulating sleeve protects the adjuster body and prevents the leakage from damaging human bodies.
Drawings
For a clearer description and understanding of the technical solutions of the embodiments of the present utility model, the following description will make a brief introduction to the drawings required for the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and the drawings without inventive effort for those skilled in the art.
FIG. 1 is a general connection diagram of a protection device for vehicle fault simulation provided by an embodiment of the present utility model;
fig. 2 is a schematic front view of an adjusting potentiometer body according to an embodiment of the present utility model.
Detailed Description
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, in this embodiment, a protection device for vehicle fault simulation includes an adjusting potentiometer body 1, a display device 2 and a stub box 3, wherein the stub box 3 is located between an ECU body 4 and a whole vehicle wire harness 5, a stub wire is provided on the stub box 3, an adjusting device 10 is provided on the adjusting potentiometer body 1, the adjusting device 10 is used for adjusting a resistance value in a circuit before short circuit, a safety resistor is firstly set to be connected with a point pin in series, then the resistance value of the adjusting potentiometer body 1 is gradually reduced until a short circuit fault occurs, meanwhile, a fuse is not blown due to a real short circuit, a first end of the adjusting device 10 is connected with the display device 2 through a current lead 7, a second end of the adjusting device 10 is connected with the stub box 3 through the current lead 7, the display device 2 is connected with the stub box 3 through the current lead 7 to form a current loop, and the display device 2 is used for detecting a voltage and a current value in the circuit.
Therefore, the utility model skillfully adds the adjusting potentiometer body 1 between the short circuit lines, successfully avoids the risk of burning fuses from small current to large current, simultaneously adapts to short circuit fault simulation of different vehicle types, and the display device 2 is a voltage and current double-digital display gauge outfit, thereby providing more visual reference for debugging resistance for technicians, greatly improving the working efficiency, simultaneously ensuring the power utilization safety of vehicles and saving the maintenance cost of the vehicles possibly damaged.
As an embodiment, the profile modeling insulating sleeve 6 is arranged on the outer side of the adjusting potentiometer body 1, and the profile modeling insulating sleeve 6 is at least used for performing anti-leakage protection on a contactor.
In the process of testing short circuit, a technician is operated to adjust the potentiometer body 1 to change the resistance value most of the time, insulation treatment is carried out at a place which is frequently contacted for protecting the safety of the technician, accidental electric leakage of the potentiometer is prevented from damaging human bodies, and the profiling insulation sleeve 6 is additionally arranged to protect the potentiometer body 1 and prevent the electric leakage from damaging the human bodies.
As an embodiment, the adjusting device 10 includes two fixed terminals 100, a moving terminal 101 and an adjusting member 102, where the two fixed terminals 100 are fixed on the adjusting potentiometer body 1 at intervals, the moving terminal 101 is movably disposed between the two fixed terminals 100, the driving end of the adjusting member 102 is connected to the moving terminal 101, and the moving terminal 101 is driven to reciprocate between the two fixed terminals 100 by adjusting the adjusting member 102, so as to adjust the resistance in the circuit.
Obviously, the adjusting potentiometer body 1 has two fixed terminals 100 and one movable terminal 101, the resistance of the two fixed terminals 100 is the fixed maximum standard resistance, at this time, two current leads 7 are used to move one end of the terminal 101 and one end of any fixed terminal 100 respectively, the adjusting piece 102 is adjusted again, two end elements are used to form the sliding rheostat, it should be noted that after the terminal connection is confirmed, the direction of the enlargement and the direction of the reduction need to be marked, finally the adjusting potentiometer body 1 can be ready to be connected for use, when the circuit is connected, the current leads 7 connect the shorting wire, the adjusting potentiometer body 1 and the display device 2 as required, the movable terminal 101 and any fixed terminal 100 on the adjusting potentiometer body 1 are connected with one end of the shorting wire, the other end of the movable terminal is connected with the display device 2 in series, the shorting wire is connected with the other end of the display device 2 in parallel to the potentiometer. Only when the potentiometer body 1 is regulated to restore to the maximum resistance, the two shorting lines can be connected into the short circuit box 3 for testing, so that before each short circuit, the resistance value of the potentiometer body 1 is regulated to the maximum access circuit, and then the short circuit is carried out, and then the short circuit is slowly reduced until a short circuit fault occurs.
As one embodiment, the profiling insulating cover 6 is made of rubber.
Of course, other insulating materials may be used.
As one embodiment, the adjustment member 102 employs other driving members including, but not limited to, an adjustment knob.
As an embodiment, the display device 2 adopts a direct-current voltage and current high-precision digital display meter head, and can monitor and regulate the voltage distributed by the potentiometer body 1 and the actual current value flowing through the shorting bars in real time. In an ideal state, after knowing the fault reporting voltage threshold and the line resistance, the potentiometer body 1 is directly adjusted to a corresponding resistance, but in actual operation, detailed parameter information is difficult to obtain. Through the high-precision digital display meter head of direct-current voltage and current, a technician can observe the current value of the current short circuit in real time, and the short circuit fault is simulated in a 'small current fast-tuning and large current slow-tuning' mode, and as the limit value of the short circuit is basically different and not large, the maximum estimated value for reporting the short circuit fault can be gradually obtained after the deep training of different electronic components for the first time, and the short circuit fault can be quickly and accurately searched nearby the estimated value.
The above embodiments merely illustrate the basic principles and features of the present utility model, and the present utility model is not limited to the above examples, but can be variously changed and modified without departing from the spirit and scope of the present utility model, which is within the scope of the present utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. A protection device for vehicle fault simulation is characterized in that the protection device for vehicle fault simulation comprises an adjusting potentiometer body, a display device and a stub box, wherein,
The stub box is positioned between the ECU body and the whole vehicle wire harness,
The adjusting potentiometer comprises a potentiometer body, and is characterized in that an adjusting device is arranged on the potentiometer body and used for adjusting a resistance value in a circuit, a first end of the adjusting device is connected with the display device through a current lead, a second end of the adjusting device is connected with the stub box through a current lead, the display device is connected with the stub box through the current lead to form a current loop, and the display device is used for detecting voltage and current values in the circuit.
2. The protection device for vehicle fault simulation according to claim 1, wherein the outside of the adjusting potentiometer body is provided with a profiling insulating sleeve at least for anti-leakage protection of a contactor.
3. The protection device for vehicle fault simulation according to claim 1, wherein the adjusting device comprises two fixed terminals, a movable terminal and an adjusting member, the two fixed terminals are fixed on the adjusting potentiometer body at intervals, the movable terminal is movably arranged between the two fixed terminals, the driving end of the adjusting member is connected with the movable terminal, and the movable terminal is driven to reciprocate between the two fixed terminals by adjusting the adjusting member so as to adjust the resistance in the circuit.
4. The protective device for vehicle fault simulation according to claim 2, wherein the profiling insulating sleeve is made of rubber.
5. A protection device for vehicle fault simulation according to claim 3, wherein the adjustment member employs an adjustment knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322844964.1U CN220961644U (en) | 2023-10-23 | 2023-10-23 | Protection device for vehicle fault simulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322844964.1U CN220961644U (en) | 2023-10-23 | 2023-10-23 | Protection device for vehicle fault simulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220961644U true CN220961644U (en) | 2024-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322844964.1U Active CN220961644U (en) | 2023-10-23 | 2023-10-23 | Protection device for vehicle fault simulation |
Country Status (1)
| Country | Link |
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| CN (1) | CN220961644U (en) |
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2023
- 2023-10-23 CN CN202322844964.1U patent/CN220961644U/en active Active
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